That's double standards, what China did is what Turkey did to the Kurds to keep South Eastern Turkey from going independent.
Because the allies of ww1 promised the kurds a country if they turned against the Ottoman Empire. Like the various ethnic groups ruled by the Ottomans they all got shafted by the British and the French.
The Turks only defended their homeland and interests because the Ottoman Empire collapsed you have enemies surrounding us while the German and the Austro-Hungarian Empires collapsed which meant no allies apart from the Bolsheviks who gave us some sort of support.
So called Kurdish independance was nothing more than a mess created by the British and the French which Turkey is still paying with the aftermath of ww1.
Country still lives with the fallout of World War 1.
Just like Hong Kong which itself was a British created mess especially with the Opium wars how they turned a generation of Chinese people into drug addicts.